Not necessarily all. Some pay off their credit cards in full every month, some put down large deposits on their house and take out mortgages well within their means, some only buy things when there is cash in the bank to cover it (yes folks there are some people who still do that), some make do without when others max out their credit cards on all the trappings of modern consumerism.
Here's the stumbling block in all this piety though because some have also tried saving for the future and inevitably, part of the interest from those savings somewhere along the line is probably generated by hedge funds and similar high risk stratergies so even the diligent could be accused of contributing to this. But, it would be more foolish to just put your money under a matress left to the ravages of inflation and and an escilating crime rate so no, I don't accept we are all to blame!
Edit; I'm just ranting now, it doesn't change the fact that to a greater or lesser extent, for the forseeable future we are all screwed.